I’m in the same boat. Happy with their trees but mine are too young for acorns. I’ve planted their hybrid white oaks, sawtooth oaks, and kieffer pears.
I'll be impressed to have acorns in 10 but still satisfied if they're producing a good crop at 15 or 20. I'm hoping tree tubes, full sun, and fertilizer helps but there is no magic potion for oaks that I'm aware of.